Commit Graph

7 Commits

Author SHA1 Message Date
Andrew Turner
7b309274e3 Add the generic timer registers to sysreg.h and cpu-v6.h, and use the
access functions in the generic timer driver.

Differential Revision:	https://reviews.freebsd.org/D2198
Sponsored by:	The FreeBSD Foundation
2015-04-02 12:56:06 +00:00
Ian Lepore
a286c311ab Add minimum cache line sizes to struct cpuinfo, use them in the new cache
maintenance routines.  Also add a routine to invalidate the branch cache.

Submitted by:	Michal Meloun
2015-03-09 14:46:10 +00:00
Andrew Turner
195237551a Add the User and PL1 read only and reqd write thread ID registers.
Sponsored by:	The FreeBSD Foundation
2015-01-20 11:11:32 +00:00
Ian Lepore
8a474d01ee Add accessors for the ARM CP15 performance monitor registers. Also ensure
that some #ifdef SMP code is also conditional on __ARM_ARCH >= 7; we don't
support SMP on armv6, but some drivers and modules are compiled with it
forced on via the compiler command line.
2015-01-08 01:28:46 +00:00
Ian Lepore
874d48dc8f Fix a "decl is not a prototype" error noticed by gcc (but not clang). 2014-12-28 19:05:32 +00:00
Ian Lepore
518c6ac777 Add new TLB and cache maintainence functions for armv6 and armv7. These
are inline functions that handle all the routine maintenance operations
except the flush-all and invalidate-all routines which are required only
during early kernel init.

These inline functions should be very much faster than the old mechanism
that involved jumping through the big cpufuncs table, especially for
common operations such as invalidating a single TLB entry.  Note that
nothing is calling these yet, this just is just required infrastructure
for upcoming changes to the pmap-v6 code.
2014-12-28 18:19:05 +00:00
Ian Lepore
2b71562fd8 Add new code to read and parse cpu identification data using the new CPUID
mechanism defined for armv7 (and also present on some armv6 chips including
the arm1176 used on rpi).  The information is parsed into a global cpuinfo
structure, which will be used by (upcoming) new cache and tlb maintenance
code to handle cpu-specific variations of the maintence sequences.

Submitted by: Svatopluk Kraus <onwahe@gmail.com>,
              Michal Meloun <meloun@miracle.cz
2014-12-28 18:12:56 +00:00